UEFN crashing before loading, Fortnite not loading

[DreyMaster]

Summary

My UEFN crashes before even loading, I tried uninstalling and re-installing but nothing changed. For Fortnite, it starts loading but gives an error saying “unable to log in” or something like that. Here is the error code for UEFN :
Fatal error: [File:Z:\UEVFS\Root\Engine\Source\Runtime\PakFile\Private\PakFile.cpp] [Line: 370]
Corrupt pak index detected on pak file: ../../../FortniteGame/Content/Paks/pakChunkEarly-WindowsClient.pak

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Open UEFN

Expected Result

UEFN opens

Observed Result

UEFN crashes

Platform(s)

PC

[Jimbohalo10]

hi @DreyMaster ,
check for corruption on disk using windows 11 command line right-click Run as Administrator

C:> chkdsk /f/r c:
Restart the PC and scanning automatically starts and fixes any errors
This might not fix the problem wont be corrupted system disk

[DreyMaster]

@Jimbohalo10

windows 11 command line

Hello, I tried typing this on the command prompt, restarted the PC but the problem is still there.

[Hardcawcanary]

Try suggestion here

500×500 2.84 KB

For anyone still experiencing this issue who have already updated Windows Defender, but have not had success with the above resolutions, please try the following: Close UEFN if it is open navigate to C:\Users\[USERNAME]\AppData\Local\Temp\.net delete the URC folder reopen UEFN (the URC folder will be recreated from scratch) and try again to open the project

I have used this method twice this update, once from crashing while saving and the other time I don’t know why, but the project would not open, all good now.

[PxsterXXL]

Hey i have the same issue, found a solution?